Long draft spinning cradle



J. L. TRUSLOW ET AL Lone DRAFT SPINNING CRADLE Feb. 8, 1938.

Filed Dec. 5, 1935 I ATTO RN EYS Patented Feb. 8, 1938 UNlTED STATES PATET OFFICE LONG DRAFT SPINNING CRADLE tion of Massachusetts Application December 5, 1935, Serial No. 52,970

6 Claims.

the serviceability of such cradles as will presently appear, the outstanding advantages of the invention, in its preferred form, being greater cleanliness, the elimination of a source of danger to the operative in existing cradles, and quicker assembly and disassembly.

The drawing represents only the preferred form of the invention but will serve to illustrate the principles involved which can also be incorporated in other cradle structures within the field of the claims.

Fig. 1 is a cross section through a roll head illustrating the use of the invention;

Fig. 2 a side elevation of the cradle closed;

Fig. 3 of the same open;

Fig. 4 a plan of the closed cradle;

Fig. 5 a plan of the bottom bearing bar;

Fig. 6 a front elevation of the closed cradle;

Fig. 7 a perspective of the front cradle section, and

Fig. 8 a detail illustrating the mode of separation.

The cradle taken for illustration is composed of front and back sections each of which is constituted of a pair of side plates rigidly united by a cross member. In the front section the side plates are marked I and are rigidly united by a cross member 2 in the form of a fiat-sectioned bar shouldered at its ends and riveted in square holes in the side plates forming a rigid unit. This bar serves the double purpose of connecting the side plates and of forming the front support or bearing for the top belt 3. The side plates of the rear section are marked 4 and are similarly rigidly united by a cross member in the form of a crossplate 5 with angled wings 8, both the plate and its Wings being firmly riveted into square holespunched in the side plates. The plate is located to serve as a roving deflector for guiding a roving end into the bite of the drafting belts as will be apparent but such deflector is not essential to the broad invention and could be omitted.

The front and rear sections of the cradle as thus formed are separably connected to each other and are so constructed that when attached to each other they clasp about the bosses of the bottom roll 1 and together form a notch 8 (Fig. 2) for receiving the top roll 9 about which the top belt is circled. The bottom belt i0 encircles the bottom roll and is supported at its front end by a bottom bearing bar H which is removably held in notches l 2 formed in the front edge of the side plates 5.

The preferred form of separable attachment for the front and rear cradle sections is a separable hinge-joint which is located so that the hinge axis occurs between the stretches of the top belt 3. It is formed by a lug l3 struck out from each side plate l and a corresponding button-hole slot I l cut in the side plates of the rear section or in the integral extensions, i of them which are provided for the purpose, the lugs and slots being so arranged that when brought together after the manner indicated in Fig. 8, that is to say, in a wide open position and then closed together, as indicated in Fig. 3, the attachment prevents separation of the sections while they remain closed.

In the closing of the sections their lower hookshaped extremities meet around the bottom roll so as to provide smooth and substantially continuous surfaces for guiding the edges of the bottom belt E6 to reduce belt wear and, at the same time, the hinge extensions 4 swing past the notches l2 so that the bottom bearing bar I I can be inserted under them in the notches thus snugly locking the two sections of the cradle together in closed relation. The bearing bar II is notched or shouldered i W) at one or both ends to interlock with the side plate notches and is normally retained interlocked with them by the tension of the bottom belt which must be stretched somewhat to permit the bar to be removed. This mode of locking hinged cradlesections by means of a removable belt bar and of holding the latter in position by the tension of its belt is disclosed and claimed in another application and forms no part of the present invention except in combination with "the novel features herein disclosed.

When the cradle is to be disassembled the bar I l is first removed and, the top roll 9- having been lifted from its notch and slipped endwise out of the belt, the rear cradle section is swung upwards and thus unlocked from the bottom roll and then separated from the hinge lugs i3, whereupon the top belt 3 is removed from its bearing bar 2 by passing it over one of the side plates I either one of which has the appropriate size or contour to permit such removal. This method of removing the top belt, it will be seen, is rendered possible by reason of the absence of the usual cross bar member joining the lower portions of the side plates. Heretofore the cradle side plates have been joined together by such' a cross bar, located just under the bottom belt.

The elimination of that bar, transferring its function to the belt holding bar 2, also avoids the collection of lint that normally accumulates on it and at the same time eliminates the danger to the operative involved in clearing away such lint which is usually done with the finger. Reassembly of the belts and cradle is done with the top belt first applied to the bar of the front section and then by connecting and clasping the sections together about the bottom roll and slipping the bottom bearing bar into position.

It will be seen that the invention broadly resides in the rigid cross-connection of the side plates by means which are circled by the top belt and which can therefore serve as the bearing for such belt and in the making of at least one of the side plates not too large to permit the belt to be passed over it and whether or not such side plates are further connected, as they are in the present case, by the belt-edge-guiding means which clasp around the bottom roll, that is to say, by the part herein termed the rear cradle section. It will be understood also that cradles embodying the principle of belt support and removal above described can be applied in various ways to long draft purposes, being shown in the present case as applied to spinning frames, but being equally capable of use in other relations where drafting belts are used; and it will be further understood that while the separable hinge is desirably of the type described, other forms of separable hinge or equivalent attachment will likewise sufiice.

We claim:

1. A long draft belt cradle comprising side plates rigidly united by a single cross bar which serves also as the bearing or support for the drafting belt, such belt being removable from the bar by passing it over one of said side plates and means for attaching said plates in fixed position in relation to a draft roll.

2. The combination with top and bottom drafting rolls and belts thereon, of a belt-guidin cradle composed of side plates and a single rigid cross-connection between them, said cross-connection being located to be encircled by and form a bearing for one of said belts which belt can be passed over one of the side plates for removal from said bearing and means associated with said side plates for attaching them in fixed relation to one of the drafting rolls.

3. A long draft spinning cradle comprising front and rear sections separably attached to each other, the front section comprising side plates permanently united by a belt bearing bar and the rear section comprising side plates rigidly crossconnected to each other.

l. A long draft spinning cradle comprising front and rear sections attachable to each other by a form of separable hinge lug and slot, each section comprising rigidly united side plates notched to embrace a drafting roll.

5. A long draft spinning cradle comprising front and rear sections attachable to each other by a separable hinge lug and slot,- the front section comprising side plates rigidly united by a belt bearing bar and the rear section comprising side plates rigidly united.

6. A long draft spinning cradle comprising a pair of side plates adapted to support and guide the top belt, means rigidly uniting said plates, said means being wholly located between the stretches of the top belt, and means for attaching said side plates in fixed but removable relation to the drafting rolls.

JAMES L. TRUSLOW. ROBERT J. MCCONNELL. 

